Have you tried doing colored unicode art in this thing's text editor?
It apparently only works with the given hexcolor values, but it's great for creating Tetris art. This may look weird before you click on the question:
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#008099]█[/c][c=#003BB2]█[/c][c=#003BB2]█[/c][c=#003BB2]█[/c][c=#000000]█[/c][c=#7700B2]█[/c][c=#7700B2]█[/c][c=#7700B2]█[/c][c=#BF0000]█[/c][c=#BF0000]█[/c]
[c=#008099]█[/c][c=#A69800]█[/c][c=#A69800]█[/c][c=#003BB2]█[/c][c=#000000]█[/c][c=#BF6900]█[/c][c=#7700B2]█[/c][c=#BF0000]█[/c][c=#BF0000]█[/c][c=#7700B2]█[/c]
[c=#008099]█[/c][c=#A69800]█[/c][c=#A69800]█[/c][c=#BF6900]█[/c][c=#000000]█[/c][c=#BF6900]█[/c][c=#009E4F]█[/c][c=#009E4F]█[/c][c=#7700B2]█[/c][c=#7700B2]█[/c]
[c=#008099]█[/c][c=#BF6900]█[/c][c=#BF6900]█[/c][c=#BF6900]█[/c][c=#000000]█[/c][c=#BF6900]█[/c][c=#BF6900]█[/c][c=#009E4F]█[/c][c=#009E4F]█[/c][c=#7700B2]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#008099]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c][c=#000000]█[/c]
[c=#008099]█[/c][c=#003BB2]█[/c][c=#003BB2]█[/c][c=#003BB2]█[/c][c=#000000]█[/c][c=#7700B2]█[/c][c=#7700B2]█[/c][c=#7700B2]█[/c][c=#BF0000]█[/c][c=#BF0000]█[/c]
[c=#008099]█[/c][c=#A69800]█[/c][c=#A69800]█[/c][c=#003BB2]█[/c][c=#000000]█[/c][c=#BF6900]█[/c][c=#7700B2]█[/c][c=#BF0000]█[/c][c=#BF0000]█[/c][c=#7700B2]█[/c]
[c=#008099]█[/c][c=#A69800]█[/c][c=#A69800]█[/c][c=#BF6900]█[/c][c=#000000]█[/c][c=#BF6900]█[/c][c=#009E4F]█[/c][c=#009E4F]█[/c][c=#7700B2]█[/c][c=#7700B2]█[/c]
[c=#008099]█[/c][c=#BF6900]█[/c][c=#BF6900]█[/c][c=#BF6900]█[/c][c=#000000]█[/c][c=#BF6900]█[/c][c=#BF6900]█[/c][c=#009E4F]█[/c][c=#009E4F]█[/c][c=#7700B2]█[/c]
