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With Glow Colors = Original Colors, After Effects thresholds each channel of the straight colour separately and the glow is 8 x (value - threshold + 0.061) per channel (times Intensity), nothing below: fitted to AE 2026 renders of grey 0.65 / 0.8 / 0.9 / 1, orange (1, 0.5, 0) and (0.2, 0.6, 1) solids at Threshold 40 / 60 / 80 % and Radius 10 / 30 (36 channel values, exact to the 8-bit capture; an orange solid glows red only). EffectCraft scaled the colour by a luminance threshold (k = (L - thr) / (1 - thr)), about 3.7 x too dim on white. Cases 806 / 810 / 811 (32 bpc): outside the layer now within 3/255 of AE (806 white at Intensity 1: 119 = AE, was 32); grid 0 points off for 806-810. The glow's alpha (the blurred layer alpha) and the Arbitrary Map / A & B colours and alpha-based glows are unchanged. Stacked on fix-glow-halo (same lines). Not changed: Composite Original's semantics are swapped against AE's names (EffectCraft's "On Top" adds the glow over the original, which AE calls "Behind"; AE's "On Top" keeps the original over the glow), so imported AE Glows at the default Behind show no glow inside the layer (811 interior 204 vs AE 255). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>