Solution : https://service.sap.com/sap/support/notes/959996 (SAP Service marketplace login required)
Key words :
\vc_client\servlet_jsp\vcres\root\webcontent\visualcomposer\6, \j2ee\cluster\server0\apps\sap, text input control background color, subsequent visual composer patches, support dynamic css, cascading style sheets, textinput = {'corner-radius', prerequisites adobe flex 1, color scheme reason, defaultflexframestyle tag properties
Related Notes :
919388 | Central Note: Visual Composer for SAP NetWeaver 2004s |