Change green buttons to primary color (#27099)

I think it's better if the primary actions have primary color instead of
green which fits better into the overall single-color UI design. This PR
currently replaces every green button with primary:

<img width="141" alt="Screenshot 2023-09-16 at 14 07 59"
src="https://github.com/go-gitea/gitea/assets/115237/843c1e50-4fb2-4ec6-84ba-0efb9472dcbe">
<img width="161" alt="Screenshot 2023-09-16 at 14 07 51"
src="https://github.com/go-gitea/gitea/assets/115237/9442195a-a3b2-4a42-b262-8377d6f5c0d1">

Modal actions now use uncolored/primary instead of previous green/red
colors. I also removed the box-shadow on all basic buttons:

<img width="259" alt="Screenshot 2023-09-16 at 14 16 39"
src="https://github.com/go-gitea/gitea/assets/115237/5beea529-127a-44b0-8d4c-afa7b034a490">
<img width="261" alt="Screenshot 2023-09-16 at 14 17 42"
src="https://github.com/go-gitea/gitea/assets/115237/4757f7b2-4d46-49bc-a797-38bb28437b88">

The change currently includes the "Merge PR" button, for which we might
want to make an exception to match the icon color there:

<img width="442" alt="Screenshot 2023-09-16 at 14 33 53"
src="https://github.com/go-gitea/gitea/assets/115237/993ac1a5-c94d-4895-b76c-0d872181a70b">

3 files changed, 7 insertions, 7 deletions

diff --git a/web_src/js/components/PullRequestMergeForm.vue b/web_src/js/components/PullRequestMergeForm.vue
index cca8b9dd6e..03d1f99683 100644
--- a/web_src/js/components/PullRequestMergeForm.vue
+++ b/web_src/js/components/PullRequestMergeForm.vue
@@ -29,8 +29,8 @@ export default {
   }),
   computed: {
     mergeButtonStyleClass() {
-      if (this.mergeForm.allOverridableChecksOk) return 'green';
-      return this.autoMergeWhenSucceed ? 'blue' : 'red';
+      if (this.mergeForm.allOverridableChecksOk) return 'primary';
+      return this.autoMergeWhenSucceed ? 'primary' : 'red';
     },
     forceMerge() {
       return this.mergeForm.canMergeNow && !this.mergeForm.allOverridableChecksOk;
@@ -135,7 +135,7 @@ export default {
 
     <div v-if="!showActionForm" class="gt-df">
       <!-- the merge button -->
-      <div class="ui buttons merge-button" :class="[mergeForm.emptyCommit ? 'grey' : mergeForm.allOverridableChecksOk ? 'green' : 'red']" @click="toggleActionForm(true)">
+      <div class="ui buttons merge-button" :class="[mergeForm.emptyCommit ? 'grey' : mergeForm.allOverridableChecksOk ? 'primary' : 'red']" @click="toggleActionForm(true)">
         <button class="ui button">
           <svg-icon name="octicon-git-merge"/>
           <span class="button-text">
diff --git a/web_src/js/features/common-global.js b/web_src/js/features/common-global.js
index b30e21d0c0..96fad7eee6 100644
--- a/web_src/js/features/common-global.js
+++ b/web_src/js/features/common-global.js
@@ -275,7 +275,7 @@ async function linkAction(e) {
   }
 
   const isRisky = el.classList.contains('red') || el.classList.contains('yellow') || el.classList.contains('orange') || el.classList.contains('negative');
-  if (await confirmModal({content: modalConfirmContent, buttonColor: isRisky ? 'orange' : 'green'})) {
+  if (await confirmModal({content: modalConfirmContent, buttonColor: isRisky ? 'orange' : 'primary'})) {
     await doRequest();
   }
 }
diff --git a/web_src/js/features/comp/ConfirmModal.js b/web_src/js/features/comp/ConfirmModal.js
index 1edcfd9522..e64996a352 100644
--- a/web_src/js/features/comp/ConfirmModal.js
+++ b/web_src/js/features/comp/ConfirmModal.js
@@ -4,14 +4,14 @@ import {htmlEscape} from 'escape-goat';
 
 const {i18n} = window.config;
 
-export async function confirmModal(opts = {content: '', buttonColor: 'green'}) {
+export async function confirmModal(opts = {content: '', buttonColor: 'primary'}) {
   return new Promise((resolve) => {
     const $modal = $(`
 <div class="ui g-modal-confirm modal">
   <div class="content">${htmlEscape(opts.content)}</div>
   <div class="actions">
-    <button class="ui basic cancel button">${svg('octicon-x')} ${i18n.modal_cancel}</button>
-    <button class="ui ${opts.buttonColor || 'green'} ok button">${svg('octicon-check')} ${i18n.modal_confirm}</button>
+    <button class="ui cancel button">${svg('octicon-x')} ${i18n.modal_cancel}</button>
+    <button class="ui ${opts.buttonColor || 'primary'} ok button">${svg('octicon-check')} ${i18n.modal_confirm}</button>
   </div>
 </div>
 `);