Use it as bodypaint

"Take off your coat, Agent."

Valerie did a double take. She heard Chief say it, but she didn't quite fully process it. "Uh, Chief?", she asked hesitantly.

"We're getting started right away. Take off your coat.", Chief reiterated, his voice slightly annoyed.

Valerie finally understood what the field test for the technology was. She was to wear the substance as body paint, so Jim could collect data on how it worked. There was one problem with it, though.

"Um, can't you spray it over my clothes?", she asked, turning a little red. "I-I'm not wearing anything underneath the coat." She didn't want to be topless in front of her boss and a colleague she didn't know.

"Sorry, we can't.", Jim chimed in. He pointed at the cardboard box, which had lost the bright red texture it had only a few moments ago. "Due to technical limitations, any paint not directly in contact with human skin fades away in under a minute. Small strips of fabric are fine, but anything larger than an inch doesn't work."

She gulped - it looked like she didn't have a way out. She unbuttoned the tight waistcoat and freed her shoulders, letting it fall to the ground. She quickly covered her breasts with her hands as she stood in front of Chief and Jim, wearing only her heels and the tiny g-string Eva had graciously given to her.

Jim walked up to her until he stood directly in front. "Please raise your arms above your head.", he said, smiling reassuringly. "I promise I'll make it as quick as I can."

She complied, albeit reluctantly. She couldn't exactly disobey a direct order from Chief, at least not right in front of him. He shook the can once, and began spraying. He started at her neck, before covering her chest and moving down to her stomach. He moved in a circle, going around her and evenly spraying her body. The liquid felt a little cold, causing goosebumps to form on her exposed skin.

"I need to do your legs.", he said. "Can you, uh, spread a little wide please?"

Valerie almost collapsed with embarrassment, but caught herself in time. It's like posing for an art class, she said to herself, as she complied with his request.

As a silver lining, Jim was doing his work with the utmost professionalism. He wasn't reacting to her shivering when cold paint hit a tickly area, and trying very hard to not stare at the show being presented to him. She appreciated him not making it any more awkward than it already was. He finished spraying her all the way, finishing with her arms. She breathed a sigh of relief.

"Let it dry for a couple minutes.", he said, putting the can on the table. "In the meantime, let me show the controller to you."

He took out a thin transparent band from his pocket, barely a centimeter wide. "This is what controls the material. We made this to be as discreet as possible and blend in perfectly with your body. Just need to calibrate it a bit"

He pulled out his phone, fiddling with it for a minute. Satisfied, he pressed a barely noticeable button on the band. "Look down.", he said, a large smile on his face.

She looked down on her body and gasped. A beautiful red dress had appeared on her body. For a moment, it was almost impossible to process for her brain. While she still felt naked, her eyes were completely convinced she was wearing a red evening gown made out of velvet. She had never seen anything like it.

"Wow", was all she could say. She twirled around, and the fabric actually moved with her just like a regular dress. Even Chief exclaimed approvingly, something she had never seen him do.

"Yeah, the material can actually project out a little bit from your body, that's how you get the realistic textures and movement. There's some very advanced nanotech involved there. I could send you the whitepaper...", Jim began speaking.

"Can I try it?", Valerie interrupted him excitedly. He reacted with surprise, before handing her the thin band.

She tried pressing the button where he had done. In response, her dress changed color from red to green. She pressed another button, and her floor length gown changed into street clothes - leggings and a t-shirt. She pressed the button again, and she was now wearing a professional business suit.

"This is amazing.", she said to Jim.

"Thanks. I recommend you wear the band at all times. I'll email you the manual for how to use it.", he replied proudly.

She turned to Chief. "What's my mission?"