Convert a .ttf to CBDT/CBLC format color font?

Hello Everyone,

This is my first post to Typedrawers, which kindly allowed me to
register--even though I confesed I'm not a proper type/font expert
or designer. Hopefully this is the right posting category?

Question
---------

Do any of you know of an easy-to-use tool for creating, or converting
to, a chromatic font in CBDT/CBLC format? That works on Windows?
(NotoColorEmoji.ttf is an example of a font in CBDT/CBLC format, tho'
more complicate than needed here. I've no idea about how that font was
created ...)

I've made a .ttf font with approx 80 chars, about half of which are
in the PUA. The glyphs are very simple: nearly all have outlines
comprising straight line segments only.

This font needs to be converted to the Google CBDT/CBLC format. (It
may not be coolest chromatic font format these days, but I'm stuck
with it.)

The starting point is a plain .ttf font, as above. The desired
end-point is an identical font, i.e. the same glyph/charset & the
same glyph shapes, with all the glyphs colored plain  blue or red,
for example, in CBDT/CBLC format. No fancy shading, or mingled
colors, or anything: just the same single, uniform color applied to
every glyph in the font.

The ideal solution would be a converter, commercial or free, from
COLR/CPAL to CBDT/CBLC, or from plain .ttf to CBDT/CBLC. It must
work on Windows 7. Does such a tool exist?

AFAICS Transtype cannot convert from COLR/CPAL to CBDT/CBLC.

Failing this (very likely, I guess) can anyone recommend a
consultancy or font developer with the toolset and skills to
make this conversion? Or another list to post this plea for help?

This is a one-off, or two iterations at most, requirement.
FontLab itself may have the capability in one way or another, but
I can't go down that road, owing to license cost and learning
curve/time issues (that's my problem, not a criticism of FontLab).
Ditto wrt Adobe Illustrator, et al.

With thanks and regards,

Rick