Please help us help you and fill where relevant:
Your LimeSurvey version: LimeSurvey Cloud Version 6.5.14
Survey theme/template: fruity
==================
Hi all,

I am struggling to make a question where respondents select one image out of two, where selection is indicated by a change in border color rather than a radio button (see attached image). All of the previous forumposts regarding this topic work with older versions of Limesurvey, and the proposed solutions there do not seem to work in 5+ versions due to a change in the question theme.

Any help is appreciated.

What type of question do you use in your screenshot?

Is it really an "image select" question?

Joffm 

I am using the image select list (radio) type. The 'traditional' image select does not seem to exist anymore.

You are right.
Seems it was removed because it was broken for a long time.

But you may use bootstrap buttons
[url] forums.limesurvey.org/forum/german-forum...ns-einstellen#264985 [/url]

Alternatibely use the "background" propery
background: url(" www.myserver.de/userfiles/Boot001_klein.jpg ") no-repeat 100%;

Adapt to your needs.

Joffm