This is my favorite theme but

[1000deaths]

any chance of having a version with windows controls (on the right) sorry if this isn't the place to ask.

[yiiyahui]

ok, although I don't really like it, I will add it as soon as possible.

[yiiyahui]

EDIT: Sorry, since I originally didn't plan to use Windows control buttons and didn't use an imported CSS file, it makes it impossible for both types of buttons to coexist. So for now, I've decided not to add the control buttons on the right. However, here is a method to obtain Windows control buttons that has been tested; you can modify and use it.

Step 1: Search for these codes in the userChrome.css file and remove them.

@media (-moz-platform: windows) {
    .titlebar-buttonbox-container {
        position: absolute;
        left: 20px;
        top: 21px;

        :root[inFullscreen] & {
            display: none;
        }
    }

    ...............

    ...............

    ...............

    .titlebar-close:-moz-window-inactive,
    .titlebar-min:-moz-window-inactive,
    .titlebar-restore:-moz-window-inactive,
    .titlebar-max:-moz-window-inactive {
        background: url("neptune/titlebuttons/titlebutton-backdrop.svg") no-repeat;
        background-size: contain;

        @media (prefers-color-scheme: dark) {
            background: url("neptune/titlebuttons/titlebutton-backdrop-dark.svg") no-repeat;
            background-size: contain;
        }
    }
}

Step 2: Add these contents to userChrome.css.

/* Windows control buttons */
.titlebar-buttonbox-container {
    position: absolute;
    margin-block-start: 12px;
    right: 0 !important;
}

.titlebar-button {
    margin-inline: 4px !important;
    padding: 8px !important;
    border-radius: 7px;
}

#nav-bar {
    padding-inline-start: var(--toolbar-start-end-padding) !important;
}

#TabsToolbar {
    padding-inline-end: calc(3 * var(--tab-min-height) + 4 * var(--toolbar-start-end-padding) + 100px)!important;
}

#PanelUI-menu-button {
    right: calc(var(--toolbar-start-end-padding) + 100px);
}

#tabs-newtab-button,
#TabsToolbar #new-tab-button {
    right: calc(var(--tab-min-height) + 2 * var(--toolbar-start-end-padding) + 100px);
}

#unified-extensions-button {
    right: calc(2 * var(--tab-min-height) + 3 * var(--toolbar-start-end-padding) + 100px);
}

[1000deaths]

thank you, I appreciate your efforts!