Text selection in dialog windows have low contrast

[Norbert]

Steps to reproduce:
1. Install Ubuntu MATE 18.04 LTS
2. Launch `mate-terminal`, select *Help*, *About*, select text *A terminal emulator for the MATE desktop*.

Expected results:
* selected text has good contrast

Actual results:
* selected text has bad contrast as it is not selected.

Note: you can find other examples of low contrast text.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-mate-desktop 1.222
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu4
Architecture: amd64
CurrentDesktop: MATE
Date: Sat Apr 14 16:02:42 2018
InstallationDate: Installed on 2018-04-14 (0 days ago)
InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180414)
SourcePackage: ubuntu-mate-meta
UpgradeStatus: No upgrade log present (probably fresh install)

[Norbert (nrbrtx)]

Really it was started to appear with 16.10, so all 16.10, 17.04, 17.10, 18.04 LTS, 18.10 and 19.04 are affected.

[Norbert (nrbrtx)]

It is theming issue:

* affected themes - Ambiant-MATE, Ambiant-MATE-Dark, Radiant-MATE;
* not affected themes - BlackMATE, BlueMenta, Blue-Submarine, GreenLaguna, Green-Submarine, High Contrast, High Contrast Inverse, Menta, TraditionalGreen, TraditionalOk.

So all default `mate-themes` themes should be changed to have normal text selection rectangle. See TraditionalOk as good example in attachment.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-mate-artwork - 19.10.2

---------------
ubuntu-mate-artwork (19.10.2) eoan; urgency=medium

  * Add suggested-action button style.
  * Add -secure icons required for correct VPN icon display in
    AppIndicator mode. (LP: #1681654)
  * Add Apport icons.
  * Optimise all .png and .jpg image assets.
  * De-duplicate icon themes.
  * Fix low contrast text selection in dialog windows. (LP: #1763942)
  * Fix inconsistent OK buttons.
  * Fix model buttons popovers.
  * Fix styling of paned headerbars.
  * Increase treeview expander size.
  * Increase minimum size of checkbox/radio buttons.
  * Improve font and font-size for context-menu. (LP: #1823550)
  * Improve spacing and padding for tabs, toolbars, menu items and column
    headers.

 -- Martin Wimpress <email address hidden> Mon, 20 May 2019 08:12:40 +0100