How to edit real-time lights in FTEQW?

To generate a custom colored light around an edict (self) use:

self.pflags = 2 (for glow on edict and models around it) or 128 (for glow on edict and all around it, models and brushes);

self.color = 'R G B'; (the components' magnitudes give the corresponding color's intensity)

self.light_lev = radius;

If you want the glow to vary, set

self.style = n;

For a custom variation choose n > 11 to not override lower values, which are already in use, and assign to n the variation you want by calling lightstyle(n, [string]); characters in the string encode luminosity in ascending order, 'a' being no luminosity, 'm' being default luminosity, and 'z' being max luminosity.

Note: Values for n ranging from 32 to 62 should be avoided as that range is reserved for assignments to switchable lights.