Unclear error when my color function ends with "RGB" #111

I have a lua function HexToRGB that converts hex to my rgb color object:

local colorscheme {
    FOCUS =                HexToRGB(0xF6B742FF),
    FOCUS_LIGHT =          HexToRGB(0xFFEE70FF),
    FOCUS_BOLD =           HexToRGB(0xFFCB27FF),
}

When I use Colorizer, it gives this error:

:Verbose ColorToggle
1 match on 1 line
Colorizer: Some error occurred here:  Colorize: ['rgb(\s*\%(\d\+%\?[^)]*\)\{3})', function('<SNR>303_ColorRGBValues'), 'colorizer_rgb', 1, []]
Colorizer: Position: [0, 5, 33, 0]

If I replace HexToRGB -> Hex, then it doesn't give an error.

From the README, it looks like it expects a function like rgb(20, 20, 20). Looks like the regex doesn't have a whole word marker at the start.

Eventually, I figured how to to configure Colorizer to work with my file:

let g:colorizer_hex_pattern = ['0x', '\%(\x\{6,8}\)', '']
let g:colorizer_rgb_disable = 1

But I think that pattern should require a word boundary:

\<rgb(\s*\%(\d\+%\?[^)]*\)\{3})

Also, it'd be nice if Colorizer could suggest setting colorizer_X_disable when it encounters an error like this.