I have ported a CC BY 3.0 website template as a theme on a CMS platform. I've made a few UI/UX improvements over the original template.
Can I use the theme for commercial purposes on the CMS Marketplace?
CC BY 3.0 license states that I can use the work for commercial purposes as long as I give attribution.
From my understanding and based on Best practices for attribution on CC Wiki, I should give attribution for modification and derivative work:
This is a good attribution for material you modified slightly:
"ORIGINAL_WORK" by ORIGINAL_AUTHOR, used under CC BY 3.0 / Desaturated from original
This is a good attribution for material from which you created a derivative work:
This work, "DERIVATIVE_WORK", is a derivative of "ORIGINAL_WORK" by ORIGINAL_AUTHOR, used under CC BY 3.0. "DERIVATIVE_WORK" is licensed under Regular or Extended marketplace license by MY_NAME