How to customize dressing windows with highlight groups using winhighlight?

[davisssamuel]

I'm trying to use highlight groups to customize the visual appearance of dressing windows. At first I changed the highlights of NormalFloat, FloatBorder, and FloatTitle, to no effect.

I tried to use winhighlight as the highlights section suggests, but as I understand from help winhighlight, the {hl-from}:{hl-to} syntax simply overrides one highlight group with the values from another.

How then can I modify the fg and bg highlights of the dressing window Normal, Border, and Title? Not sure if that makes sense...

[davisssamuel]

I think I may have figured it out myself. I defined my own highlight groups for dressing and then used winhighlight to overwrite NormalFloat, FloatBorder, and FloatTitle with those groups in the dressing config.

-- colorscheme.lua

DressingNormalFloat = { fg = colors.fg, bg = colors.bg }
DressingFloatBorder = { fg = colors.fg, bg = colors.bg }
DressingFloatTitle = { fg = colors.fg, bg = colors.bg }

-- dressing.lua

input = {
  win_options = {
    winhighlight = 'NormalFloat:DressingNormalFloat,FloatBorder:DressingFloatBorder,FloatTitle:DressingFloatTitle'
  }
}

I'm not sure if this is the correct way to modify the dressing window highlights, but it works for me.