### Steps to reproduce

1. Be in dark mode

2. Go to any project

3. Go to a WP query with main WPs and children WPs

4. Go to the 3 dots menu and add the 'Children' column


### What is the buggy behaviour?

* Children number icon is so light you don't see there is a number

* Children label is too light too


### What is the expected behaviour?

* Change the background of the counter to Begin of the insertion`var(--bgColor-neutral-muted)`End of the insertion Begin of the deletion {newValue}End of the deletion

* Change the background colour of the children row:

* from: `#dcebf499`

* to: `var(--bgColor-neutral-muted)`

* The border-bottom colour of the 'Children' cell of the parent row:

* from: `1px solid rgba(220,235,244,.6);`

* to: `1px solid var(--borderColor-neutral-muted)`


### Important note

Looks ok on light and high contrast modes

### Screenshots and other files

**Current**

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/385282/content">

**With change**

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/414608/content">

### Environment information

**OpenProject version**

Core build

[a95f81f6975b8e8b0bd8bbc9558b1547dac4deff](https://github.com/opf/openproject/commits/a95f81f6975b8e8b0bd8bbc9558b1547dac4deff)

Product version

[4b55c8485559fa6ad277e54aea2b97536297836d](https://github.com/opf/saas-openproject/commits/4b55c8485559fa6ad277e54aea2b97536297836d)

Core version

OpenProject 15.5.0

**Browser**

* [ ] Chrome
* [x] Firefox 136.0.2
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows 11Pro
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)

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