>professionals are going to want to see the rounded “actual” values

Ideally, a generalised design tool should cater for rounding to 8bit and other meaningful precisions, or keeping source data intact.

All we’re talking about is _allowing_ for a user to type in a fractional number, and for it to be kept. It’s not a difficult request, and it doesn’t negatively affect normal use for people who don’t even know the feature exists. They can continue typing in integers.

If we’re talking about software design, it’s likely that in many situations the buffer being rendered into will be deeper than 8bit per channel, so even covering 0-255 is not enough.