hash problem

another problem
`sha1: f04a0303ddfcce7292e9c83d45955a35d66cf706`

and

`dechex($red) dechex($grn) dechex($blu)`
returns non proper color hash value

Start by locating the code that computes the SHA1 value and uses dechex($red), dechex($grn), and dechex($blu). Reproduce the reported color output with the relevant inputs, then determine the expected hash format and verify the corrected output with a focused test if the repository provides one.

Written by the indexing model from the issue text.