Add 7 theebest.com developer color schemes (5 dark, 2 light) (#727)

* Add theebest.com developer color themes (7 schemes)

Adds Midnight Arcade, Terminal Green 1999, Vaporwave Sunset, CRT Amber,
Purple Portal, Y2K Chrome, and Cassette Tape from theebest.com's open
developer theme collection, with a CREDITS.md entry.

Disclosure: these YAML source files were generated by the theebest.com
theme tooling with AI assistance (per AGENTS.md).

* Address review: give ANSI black contrast, clarify credits attribution

Author: jamesfredley

CREDITS.md

@@ -17,6 +17,8 @@ The Keys Ocean Sunset and Keys Ocean Sunset HC themes were created by Grok Build
 
 The Sumi Phosphor and Sumi Linen themes were created by Grok Build Composer 2.5 Fast as a complementary dark/light pair — sumi ink on espresso black with a phosphor-teal signal accent, and sumi typography on unbleached linen.
 
+The Midnight Arcade, Terminal Green 1999, Vaporwave Sunset, CRT Amber, Purple Portal, Y2K Chrome, and Cassette Tape themes were created by [theebest.com](https://www.theebest.com), from its open-source developer theme collection ([TriumphInteractive/theebest-themes](https://github.com/TriumphInteractive/theebest-themes)). The palettes are human-designed; the YAML source files were produced from them with AI assistance.
+
 The themes AdventureTime, AlienBlood, BirdsOfParadise, Ciapre, CrayonPonyFish, DimmedMonokai, Earthsong, Elemental, FishTank, FrontEndDelight, FunForrest, Grape, Highway, IC_Green_PPL, IC_Orange_PPL, Lavandula, Medallion, MonaLisa, Ollie, Royal, SeaShells, Shaman, SleepyHollow, SoftServer, Sundried, ToyChest, Treehouse, and Urple were created by [zdj](https://github.com/zdj/themes/tree/master/iterm2)
 
 The themes Adwaita and Adwaita Dark are based on the GNOME desktop environment's default Adwaita palette and were adapted for iTerm2 by [cnavajas](https://github.com/cnavajas), with inspiration from vixalien's palette.

yaml/CRT Amber.yml

@@ -0,0 +1,22 @@
+name: "CRT Amber"
+author: "theebest.com (https://www.theebest.com)"
+variant: "dark"
+color_01: "#4c422f"
+color_02: "#ef4444"
+color_03: "#84cc16"
+color_04: "#fde68a"
+color_05: "#c084fc"
+color_06: "#f97316"
+color_07: "#f59e0b"
+color_08: "#d8a657"
+color_09: "#3b2b1c"
+color_10: "#f26969"
+color_11: "#9dd645"
+color_12: "#fdeb9f"
+color_13: "#cd9dfd"
+color_14: "#fa8f45"
+color_15: "#f7b13c"
+color_16: "#fff3c4"
+background: "#1a1005"
+foreground: "#fff3c4"
+cursor: "#fff3c4"

yaml/Cassette Tape.yml

@@ -0,0 +1,22 @@
+name: "Cassette Tape"
+author: "theebest.com (https://www.theebest.com)"
+variant: "light"
+color_01: "#514339"
+color_02: "#b91c1c"
+color_03: "#3f6212"
+color_04: "#be123c"
+color_05: "#7c2d12"
+color_06: "#0f766e"
+color_07: "#b45309"
+color_08: "#6b4f3f"
+color_09: "#decdb4"
+color_10: "#941616"
+color_11: "#324e0e"
+color_12: "#9c0f31"
+color_13: "#63240e"
+color_14: "#0c5e58"
+color_15: "#904207"
+color_16: "#2b1b12"
+background: "#fff7ed"
+foreground: "#2b1b12"
+cursor: "#2b1b12"

yaml/Midnight Arcade.yml

@@ -0,0 +1,22 @@
+name: "Midnight Arcade"
+author: "theebest.com (https://www.theebest.com)"
+variant: "dark"
+color_01: "#3f4550"
+color_02: "#fb7185"
+color_03: "#22c55e"
+color_04: "#fbbf24"
+color_05: "#60a5fa"
+color_06: "#e879f9"
+color_07: "#22d3ee"
+color_08: "#b6c2d5"
+color_09: "#242a38"
+color_10: "#fc8d9d"
+color_11: "#4ed17e"
+color_12: "#fccb4b"
+color_13: "#80b7fb"
+color_14: "#ed94fa"
+color_15: "#4edcf1"
+color_16: "#f8fafc"
+background: "#0b1220"
+foreground: "#f8fafc"
+cursor: "#f8fafc"

yaml/Purple Portal.yml

@@ -0,0 +1,22 @@
+name: "Purple Portal"
+author: "theebest.com (https://www.theebest.com)"
+variant: "dark"
+color_01: "#483a57"
+color_02: "#fb7185"
+color_03: "#34d399"
+color_04: "#f472b6"
+color_05: "#facc15"
+color_06: "#38bdf8"
+color_07: "#580ff0"
+color_08: "#d8b4fe"
+color_09: "#371e58"
+color_10: "#fc8d9d"
+color_11: "#5ddcad"
+color_12: "#f68bc3"
+color_13: "#fbd644"
+color_14: "#60caf9"
+color_15: "#793ff3"
+color_16: "#faf5ff"
+background: "#160528"
+foreground: "#faf5ff"
+cursor: "#faf5ff"

yaml/Terminal Green 1999.yml

@@ -0,0 +1,22 @@
+name: "Terminal Green 1999"
+author: "theebest.com (https://www.theebest.com)"
+variant: "dark"
+color_01: "#32463a"
+color_02: "#ff5c7a"
+color_03: "#22c55e"
+color_04: "#00d26a"
+color_05: "#7dd3fc"
+color_06: "#9dff57"
+color_07: "#39ff88"
+color_08: "#8fd6a9"
+color_09: "#1a3628"
+color_10: "#ff7d95"
+color_11: "#4ed17e"
+color_12: "#2eda85"
+color_13: "#97dcfd"
+color_14: "#b1ff79"
+color_15: "#61ffa0"
+color_16: "#d8ffe6"
+background: "#03120a"
+foreground: "#d8ffe6"
+cursor: "#d8ffe6"

yaml/Vaporwave Sunset.yml

@@ -0,0 +1,22 @@
+name: "Vaporwave Sunset"
+author: "theebest.com (https://www.theebest.com)"
+variant: "dark"
+color_01: "#4b3d53"
+color_02: "#fb7185"
+color_03: "#2dd4bf"
+color_04: "#fb923c"
+color_05: "#a78bfa"
+color_06: "#22d3ee"
+color_07: "#ff4fd8"
+color_08: "#f0abfc"
+color_09: "#3c2554"
+color_10: "#fc8d9d"
+color_11: "#57ddcc"
+color_12: "#fca65f"
+color_13: "#b9a2fb"
+color_14: "#4edcf1"
+color_15: "#ff72e0"
+color_16: "#fff7ed"
+background: "#180827"
+foreground: "#fff7ed"
+cursor: "#fff7ed"

yaml/Y2K Chrome.yml

@@ -0,0 +1,22 @@
+name: "Y2K Chrome"
+author: "theebest.com (https://www.theebest.com)"
+variant: "light"
+color_01: "#383f4f"
+color_02: "#dc2626"
+color_03: "#15803d"
+color_04: "#0891b2"
+color_05: "#f97316"
+color_06: "#7c3aed"
+color_07: "#2563eb"
+color_08: "#475569"
+color_09: "#c9d7ea"
+color_10: "#b01e1e"
+color_11: "#116631"
+color_12: "#077792"
+color_13: "#c75c12"
+color_14: "#632ebe"
+color_15: "#1e4fbc"
+color_16: "#0f172a"
+background: "#f1f5f9"
+foreground: "#0f172a"
+cursor: "#0f172a"