This theme combines the typical colors of Workbench 1.3 with some icons that reflect the original ones, and others modified to adapt them to the functions they are intended to represent.
In any case all the icons have been redrawn with Inkscape, and exported in the Plain SVG format.
The available icons cover the Navigation bar, the Status Bar and the side Panel, while for Mail only those for Reload and Trash are replaced, while the others remain the original Vivaldi icons.
In this theme the prevailing color is the blue of the workbench, and the navigation bar reflects the white of the window bar, however if you wish you can make the navigation bar blue, and the title bar of the browser white, simply by entering in the theme Editor, and by activating the "Accent on Window" item in the Colours section. However in this way the Back and Forward icons will show a white background, necessary in this case to remain visible.
In case you don't like it, you can download my other theme "Amiga Workbench 1.3 Dark Mode" which includes a version of the Back and Forward icons that use black or white colors to match the color of the navigation bar.
PS: Sorry for my English :)