The opposite of "bright" is usually "dim." The "g" may be incorrect.
Dim.
colloquial "dumb"
dim
The opposite for the word plain starting with letter f is FANCY.
irrelavent
stopping
stopping
Not really a bright spot, but a prominence, the word is "flare".
Stopping
dimly
stopping :) EASY x
Bells, bright lights and butter pancakes.
negligibleimpalpableunapparentindefiniteindistinct