util: add hex colors support in `styleText` #3956

Job	Run time
Build slim tarball	2m 11s
aarch64-darwin: with shared libraries	20m 11s
x86_64-linux: with shared libraries	24m 2s
x86_64-darwin: with shared libraries	31m 55s
aarch64-linux: with shared libraries	19m 34s
	1h 37m 53s

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