What does زر سطوع منخفض look like on Mozilla?

On Mozilla it is the design shipped in Firefox OS 2.5, shown above at full size. Older revisions are listed beneath it.

When did Mozilla add زر سطوع منخفض?

Mozilla first drew زر سطوع منخفض in Firefox OS 2.5, released 30 يناير 2016.

Mozilla Foundation has shipped 1 version of زر سطوع منخفض. Each is dated, so you can see when the design changed.

Mozilla

Mozilla Foundation has drawn زر سطوع منخفض once. Every revision Mozilla has shipped is below, newest first.

What does زر سطوع منخفض look like on Mozilla?: On Mozilla it is the design shipped in Firefox OS 2.5, shown above at full size. Older revisions are listed beneath it.
When did Mozilla add زر سطوع منخفض?: Mozilla first drew زر سطوع منخفض in Firefox OS 2.5, released 30 يناير 2016.
How many times has Mozilla redrawn زر سطوع منخفض?: Mozilla Foundation has shipped 1 version of زر سطوع منخفض. Each is dated, so you can see when the design changed.