I love this scene in the manga as-is, but the color just adds to it.
The sheer contrast of this nice bright blue sky, the light, fluffy clouds… and the horrible death and bloodshed happening below.
Not to mention how great this scene is in-manga. There’s no goofy charge-up, there’s no wait time, Krillin gets pissed, genuinely outraged at the callous dismissal of Yamcha, his dead friend, as trash (and at himself for letting him take his place, feeling a bit responsible) that he barely gives off a warning to the others to stay back before firing off a blast powerful enough to make literally everyone else on the field scatter for fear of potentially being hit by it.
It just feels so much more raw and emotional on-page to me.