Sorry about the pun in the summary. I just can't help myself sometimes.
Disclaimer: Not mine. Obviously. Using them without consent. Duh. No legal action. Please.
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Robin came to, winced, and clutched at his head. That had to be a first; the villain had got the drop on them, and then ran away right after a successful ambush. They hadn't even stopped to gloat. "Titans..." he cleared his throat and tried again. "... Everyone alright?"
"I'll live." Cyborg.
"I am well, friend Robin." Starfire.
"I've got a headache like you wouldn't believe, but I'll live." Raven.
"No prob, Rob." Raven again.
Robin breathed a sigh of relief. Until he played back that last reply. "Beast Boy, say that again...?"
"No prob, Rob?" Yeah, that was still Raven's voice. Robin suddenly had a baaaad feeling.
The light had finally cleared from his eyes so that he could see properly, and he took stock. Starfire, Cyborg, Raven... no Beast Boy. When Raven got to her feet, her back towards him, the bad feeling got worse. She was several inches shorter than she should have been.
Raven echoed his uneasy observation. "Is it just me, or am I... shorter than I was a minute ago?" Star, who was in a better position to see Raven's front, added in a helpful voice, "You also seem to be a lovely shade of avocado, friend Raven."
Raven paused, and looked down at herself. She was, in fact, green. She pulled a lock of her hair in front of her face; it was no longer violet. It, too, had turned a dark green. Raven put two and two together. She came up with four, because Raven was good at math. She put a hand over her eyes and muttered, "Beast Boy, are you in there?" Raven's voice came again, somehow meeker this time. "Yeah... yeah, I'm in here."
Cyborg burst out laughing, at least until he noticed Raven attempting to make his head explode with the force of her gaze. And considering this was Raven, she had a chance of succeeding, so he shut the hell up. He wiped all expression from his face, though his lips were still twitching suspiciously. "We should get back to the T tower. I can run some tests," he said seriously.
Raven gave one more glare in his general direction before calming her mind - both of them - drawing on her power, and transporting them back to Titan Tower.