ΔE 15.3, loose: different enough that you should pick on purpose. Fired Clay is noticeably darker, cooler than Bugman's Glow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Fired Clay is noticeably darker, cooler than Bugman's Glow.
The same difference applies the other way round: Bugman's Glow is noticeably lighter, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Bugman's Glow on the colour wheel See Fired Clay on the colour wheel
All matches: Bugman's Glow equivalents · Fired Clay equivalents