Hi ,
Thanks for your invitation. I will soon upload some button design for you.

Regards
Jack

Please clarify what you mean by "288" in "3x288 with 24h time "00:00", "00:05", "00:10" (normal, pressed, disabled)." 

288 Buttons. 24 hours x 12 buttons = 288 Buttons.

so all except 3 led buttons must be grey/black?

Hi, thanks for your question. Well, it should look like a high end remote control. It could be brushed aluminum as well, or something you come up with. But I guess black or dark grey would be best. The background will be istockphoto 12897125, but it's not available yet.

Hello, thanks for the invite.

Thanks for your question. I only need one button with 3 states and 1 LED to decide.

Thank you for the clarification. Considering the number of buttons required, I think it's best for me not to take part in this project, as I'm in the middle of moving out and have limited working time for the next 10 days or so, due to location search, packing and unpacking.

Thanks for the project invite. Always appreciated.