[Feature Request] Add customizable text and background color options for user messages

Bug Description
Option to set text and background color for the user's text.

Environment Info

• Platform: linux
• Terminal: tmux
• Version: 2.1.100
• Feedback ID: 273be324-7f7e-4c82-960b-8c386379f2ae

Errors

[{"error":"MaxFileReadTokenExceededError: File content (17959 tokens) exceeds maximum allowed tokens (10000). Use offset and limit parameters to read specific portions of the file, or search for specific content instead of reading the whole file.\n    at kO7 (/$bunfs/root/src/entrypoints/cli.js:4360:12671)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-11T15:02:19.455Z"},{"error":"AxiosError: Request failed with status code 404\n    at vU (/$bunfs/root/src/entrypoints/cli.js:108:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:113:12750)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:865:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:115:2467)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-11T15:02:23.673Z"},{"error":"Error: File does not exist. Note: your current working directory is /home/naw7az/workspaces/REF-22698.\n    at call (/$bunfs/root/src/entrypoints/cli.js:4369:7632)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-11T15:02:50.843Z"}]