C4C custom skin

Hi C4C gurus,

Most of time the only way to change look and feel of Cloud Solution is to change the skin or themes. In my case, I would like to create my own .CSS and code directly my own javascript in order to have specific shape, font, color exactly where I want :

• some buttons to be round without lines,
• some buttons to be oval with a line,
• specific flat icon for some buttons and labels with specific color when highlighted
• specific titles or descriptions field (not all) with very specific font such as

.fontXXX {

width: 250px;

height: 37px;

font-family: Gilroy;

font-size: 40px;

font-weight: 200;

font-style: normal;

font-stretch: normal;

line-height: 0.96;

letter-spacing: normal;

text-align: left;

color: #001f42;

}

• if it is possible, what would be the complexity? Any limitation?
• Can I play in that level of detail without impacting other client tenant, without any impact on performance?
• Does it impact the licensing support from SAP C4C?
• Any issue for maintenance or version upgrades?